Technical Specification

Product Information

Clean lines, contemporary style and added fire protection - the White Smooth Ladder 4 Panel Fire Door from Climadoor delivers on all fronts. Also known as the Linear or Colorado, this FD30-rated door combines the same modern ladder panel design with a robust solid core, giving you 30 minutes of certified fire resistance without compromising on looks.

Supplied white primed and ready for on-site finishing, it features a smooth MDF face that’s easy to paint and style to suit your interior. Designed for quick installation and compliance, it’s ideal for developers, landlords and homeowners looking for a dependable and affordable upgrade.

Key Features

• Modern 4-panel ladder-style moulded design
• Referred to as the Linear or Colorado in the trade
• FD30-rated with a solid fire-resistant core
• Supplied white primed with a smooth MDF skin
• Ready to paint to your desired finish
• Available in the UK’s most popular imperial and metric sizes
• Fitted with 18mm hardwood lippings
• Trimmable by up to 12mm from any edge
• Also available in 35mm & 40mm non-fire rated variants
• Bespoke sizes available to order on extended lead times
• Volume pricing available – perfect for multi-plot sites and trade
• FSC® (INT-COC-003944.500) certified for sustainable sourcing
• Includes a 10-year manufacturing defects guarantee

Fire Protection Meets Modern Design

This FD30-rated version of Climadoor’s popular ladder door is designed to provide essential fire safety in homes and rental properties, while keeping the same sleek, understated look. Whether you’re replacing internal doors in an older property or working on a new build, it fits right in and offers complete peace of mind.

With generous trim allowances and a solid feel, it’s as practical as it is good-looking. Pair it with matching standard or bespoke sizes throughout the home to keep things consistent while meeting regulations. A great-looking, great-performing option for anyone who values style and safety on a budget.